Teflon lining hot-press forming die for fluorine-lined valve

Abstract

The utility model discloses a Teflon lining hot press forming die for a fluorine lining valve, which relates to the technical field of fluorine lining valve dies, and comprises a base, the top end of the base is fixedly connected with a guide post, the outer side of the guide post is connected with an ejector plate in a sliding manner, and the top end of the ejector plate is provided with a plurality of ejector assemblies. And a jacking assembly is arranged on one side of the ejector plate. The ejector plate can be driven to move upwards to eject a workpiece through the jacking assembly, the demolding efficiency is improved, when the workpiece is ejected through the ejector assembly, the buffering effect can be achieved, the workpiece is prevented from being scratched in the ejection process, supporting force is gradually applied to the workpiece through the top end of the ejector rod, the workpiece is ejected out, and the demolding efficiency is improved. The top end of the ejector pin rod is stressed to drive the piston to move downwards, so that the spring is stressed to deform, meanwhile, liquid in the hydraulic supporting rod passes through the through hole, damping force is generated, and the buffering effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of PTFE-lined valve mold technology, specifically a PTFE-lined hot-pressing molding mold for PTFE-lined valves. Background Technology

[0002] Fluorine-lined valves are high-performance valves made by lining the inner wall of steel or iron valves with fluoroplastic materials such as polytetrafluoroethylene (PTFE) through a special process. They combine the strength of metal with the excellent corrosion resistance of fluoroplastics, and can resist the erosion of various strong acids, strong alkalis, strong oxidants and other corrosive media. They are suitable for highly corrosive media environments such as sulfuric acid, hydrochloric acid, and hydrofluoric acid. The fluoroplastic lining prevents the medium from coming into contact with the metal, ensuring that the fluid is not contaminated by metal ions, making it suitable for transporting pure media.

[0003] Currently, PTFE liners often cannot be automatically demolded, requiring manual assistance from operators. This process is time-consuming and results in low production efficiency. Furthermore, PTFE liners undergo a cooling process after hot pressing, and traditional cooling rates are low, affecting the performance of the PTFE lined workpieces. Therefore, there is an urgent need for a PTFE liner hot pressing mold for PTFE lined valves to solve these problems. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this invention is to provide a hot-pressing mold for PTFE liners used in PTFE-lined valves, in order to solve the problems mentioned in the background art, such as the fact that the hot-pressing molds for PTFE liners often cannot automatically demold and require manual assistance from operators, which is a waste of time and results in low production efficiency. In addition, the PTFE liners undergo a cooling process after hot pressing, and the traditional cooling rate is low.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a PTFE liner hot-pressing mold for PTFE-lined valves, comprising a base, a guide post fixedly connected to the top of the base, an ejector plate slidably connected to the outer side of the guide post, a plurality of ejector pin assemblies provided at the top of the ejector plate, a lifting assembly provided on one side of the ejector plate, blocks fixedly connected to both sides of the top of the base, a lower mold base fixedly connected to the top of the blocks, a lower mold fixedly connected to the top of the lower mold base, guide rods fixedly connected to the four corners of the top of the lower mold base, an upper mold base sleeved on the outer side of the guide rods, an upper mold fixedly connected to the bottom of the upper mold base, cooling assemblies provided on the outer sides of both the lower and upper molds, and a flow channel fixedly connected to the top of the upper mold base.

[0008] The present invention is further configured such that the ejector pin assembly includes a hydraulic support rod, an ejector pin rod, and a piston. The bottom end of the hydraulic support rod is fixedly connected to the top end of the ejector pin plate, the outer side of the ejector pin rod is slidably connected to the top end of the hydraulic support rod, the top end of the ejector pin rod is located at the bottom of the lower mold, and the top end of the piston is fixedly connected to the bottom end of the ejector pin rod.

[0009] The present invention is further configured such that the ejector pin assembly also includes a spring, the spring being sleeved on the outside of the ejector pin rod, the top end of the spring being fixedly connected to the inner wall of the hydraulic support rod, and the bottom end of the spring being fixedly connected to the top end of the piston.

[0010] The present invention is further configured such that the ejector pin assembly includes a buffer cavity, a through hole, and a ball, the buffer cavity being opened inside the piston, the through hole being opened on the upper and lower sides of the piston, and the ball being disposed inside the buffer cavity.

[0011] The present invention is further configured such that the lifting assembly includes a cylinder, a movable plate, a slide groove, and a slide rod. The outer side of the cylinder is fixedly connected to the outer side of the block. One end of the movable plate is fixedly connected to the output shaft of the cylinder. The slide groove is opened inside the movable plate. One end of the slide rod is fixedly connected to the outer side of the ejector plate. The outer side of the slide rod is slidably connected to the inside of the slide groove.

[0012] The present invention is further configured such that the cooling assembly includes a water tank, a cooling plate, and a water pump, the bottom end of the water tank is fixedly connected to the top end of the lower mold base, the outer side of the cooling plate is fixedly connected to the outer side of the water tank, the bottom end of the water pump is fixedly connected to the top end of the water tank, and the input end of the water pump is located inside the water tank.

[0013] The present invention is further configured such that the cooling assembly includes a guide pipe, a cooling pipe and a return pipe, one end of the guide pipe is fixedly connected to the output end of the water pump, the inlet end of the cooling pipe is fixedly connected to one end of the guide pipe, the cooling pipe is arranged in an S-shape inside the lower mold, one end of the return pipe is fixedly connected to the outlet pipe of the cooling pipe, and the other end of the return pipe is fixedly connected to the top of the water tank.

[0014] Compared with the prior art, the PTFE liner hot pressing mold for PTFE-lined valves has the following advantages:

[0015] 1. The present invention relates to a PTFE liner hot pressing mold for PTFE lined valves. Through the setting of the lifting component, the ejector plate can be driven to move upward to eject the workpiece, thereby improving the demolding efficiency. By starting the cylinder, the movable plate is pushed to move horizontally, so that the slide rod slides in the slide groove. With the guiding action of the guide column, the ejector plate can be driven to move upward, and at the same time, several ejector assemblies are driven to move upward to eject the workpiece.

[0016] 2. The present invention relates to a PTFE-lined hot-press molding die for PTFE-lined valves. Through the setting of the ejector pin assembly, a buffering effect can be obtained when ejecting the workpiece, avoiding scratches to the workpiece during the ejection process. The top of the ejector pin rod gradually applies a supporting force to the workpiece, ejecting the workpiece. The top of the ejector pin rod is subjected to force, which drives the piston to move downward, causing the spring to deform under force. At the same time, the internal fluid of the hydraulic support rod passes through the through hole, generating a damping force and playing a buffering role.

[0017] 3. The present invention provides a PTFE-lined hot-pressing mold for PTFE-lined valves. Through the provided cooling components, the mold after hot pressing can be rapidly cooled by water cooling, thereby improving cooling efficiency. The water pump and cooling plate are started to run, and the cooling liquid in the water tank is introduced into the cooling pipe through the guide pipe to rapidly cool the workpiece. Subsequently, the cooling liquid flows back into the water tank through the return pipe for reuse. The cooling plate can cool the heated liquid to ensure the cooling effect.

[0018] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the mold of this utility model;

[0020] Figure 2 This is a schematic diagram of the mold structure from another perspective of the present invention;

[0021] Figure 3 This is a schematic diagram of the mold lifting assembly structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the mold ejector pin assembly structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the mold cooling assembly structure of this utility model.

[0024] In the diagram: 1. Base; 2. Guide post; 3. Ejector plate; 4. Ejector assembly; 401. Hydraulic support rod; 402. Ejector rod; 403. Piston; 404. Spring; 405. Buffer chamber; 406. Through hole; 407. Ball; 5. Lifting assembly; 501. Cylinder; 502. Movable plate; 503. Slide groove; 504. Slide rod; 6. Block; 7. Lower mold base; 8. Lower mold; 9. Guide rod; 10. Upper mold base; 11. Upper mold; 12. Cooling assembly; 1201. Water tank; 1202. Cooling plate; 1203. Water pump; 1204. Guide pipe; 1205. Cooling pipe; 1206. Return pipe; 13. Flow channel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a PTFE lining hot pressing molding die for PTFE-lined valves, including a base 1, a guide post 2 fixedly connected to the top of the base 1, an ejector plate 3 slidably connected to the outside of the guide post 2, several ejector pin assemblies 4 provided at the top of the ejector plate 3, a lifting assembly 5 provided on one side of the ejector plate 3, blocks 6 fixedly connected to both sides of the top of the base 1, a lower mold base 7 fixedly connected to the top of the blocks 6, a lower mold 8 fixedly connected to the top of the lower mold base 7, guide rods 9 fixedly connected to the four corners of the top of the lower mold base 7, an upper mold base 10 sleeved on the outside of the guide rods 9, an upper mold 11 fixedly connected to the bottom of the upper mold base 10, cooling assemblies 12 provided on the outside of both the lower mold 8 and the upper mold 11, and a flow channel 13 fixedly connected to the top of the upper mold base 10.

[0027] Hot raw materials are added from the runner 13 into the forming cavity between the upper mold 11 and the lower mold 8 for pressing and forming. After the workpiece is formed, the mold can be quickly cooled by water cooling through the cooling component 12, which improves the cooling efficiency and ensures the performance of the PTFE lined workpiece. The lifting component 5 and the ejector pin component 4 can eject the PTFE lined workpiece after the mold is formed, which improves the demolding efficiency and also plays a buffering role during the ejection process to avoid scratching the PTFE lined workpiece during the ejection process.

[0028] like Figure 1 , Figure 2 and Figure 4As shown, the ejector assembly 4 includes a hydraulic support rod 401, an ejector rod 402, a piston 403, a spring 404, a buffer cavity 405, a through hole 406, and a ball 407. The bottom end of the hydraulic support rod 401 is fixedly connected to the top end of the ejector plate 3. Liquid is provided inside the hydraulic support rod 401. The outer side of the ejector rod 402 is slidably connected to the top end of the hydraulic support rod 401. The top end of the ejector rod 402 is located at the bottom of the lower mold 8. The top end of the piston 403 is fixedly connected to the bottom end of the ejector rod 402. The spring 404 is sleeved on the outer side of the ejector rod 402. The top end of the spring 404 is fixedly connected to the inner wall of the hydraulic support rod 401. The bottom end of the spring 404 is fixedly connected to the top end of the piston 403. The buffer cavity 405 is opened inside the piston 403. The through hole 406 is opened on the upper and lower sides of the piston 403. The ball 407 is disposed inside the buffer cavity 405.

[0029] The workpiece is gradually supported by the top of the ejector rod 402, which pushes the workpiece out. The top of the ejector rod 402 is stressed, which drives the piston 403 to move downward, causing the spring 404 to deform under stress. At the same time, the internal fluid of the hydraulic support rod 401 passes through the through hole 406, generating a damping force and playing a buffering role. In addition, the buffer cavity 405 and the ball 407 are set in the piston 403 to help offset the attenuation force of the impact.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the lifting assembly 5 includes a cylinder 501, a movable plate 502, a slide groove 503, and a slide rod 504. The outer side of the cylinder 501 is fixedly connected to the outer side of the block 6. One end of the movable plate 502 is fixedly connected to the output shaft of the cylinder 501. The slide groove 503 is opened inside the movable plate 502. One end of the slide rod 504 is fixedly connected to the outer side of the ejector plate 3. The outer side of the slide rod 504 is slidably connected to the inside of the slide groove 503.

[0031] By activating cylinder 501, the movable plate 502 is moved horizontally, causing slide bar 504 to slide in slide groove 503. With the guidance of guide post 2, ejector plate 3 can be moved upward, and several ejector assemblies 4 can be moved upward to eject the workpiece.

[0032] like Figure 1 , Figure 2 and Figure 5As shown, the cooling assembly 12 includes a water tank 1201, a cooling plate 1202, a water pump 1203, a guide pipe 1204, a cooling pipe 1205, and a return pipe 1206. The bottom end of the water tank 1201 is fixedly connected to the top end of the lower mold base 7. Cooling liquid is provided inside the water tank 1201. The outer side of the cooling plate 1202 is fixedly connected to the outer side of the water tank 1201. The bottom end of the water pump 1203 is fixedly connected to the top end of the water tank 1201. The input end of the water pump 1203 is located inside the water tank 1201. One end of the guide pipe 1204 is fixedly connected to the output end of the water pump 1203. The inlet end of the cooling pipe 1205 is fixedly connected to one end of the guide pipe 1204. The cooling pipe 1205 is arranged in an S-shape inside the lower mold 8. One end of the return pipe 1206 is fixedly connected to the outlet pipe of the cooling pipe 1205. The other end of the return pipe 1206 is fixedly connected to the top end of the water tank 1201.

[0033] Start the water pump 1203 and the cooling plate 1202 to run the cooling liquid in the water tank 1201 through the guide pipe 1204 into the cooling pipe 1205 to quickly cool the workpiece. Then the cooling liquid flows back into the water tank 1201 through the return pipe 1206 for reuse. The heated liquid can be cooled down through the cooling plate 1202.

[0034] Working principle: During use, hot raw materials are added from the flow channel 13 into the forming cavity between the upper mold 11 and the lower mold 8 for pressing and forming. After the workpiece is formed, the water pump 1203 and the cooling plate 1202 are started. The water pump 1203 draws the cooling liquid in the water tank 1201 into the guide pipe 1204, and then into the cooling pipe 1205. The cooling liquid in the cooling pipe 1205 exchanges heat with the mold to quickly cool the workpiece. Then the cooling liquid flows back into the water tank 1201 from the return pipe 1206 for reuse. The cooling plate 1202 can cool the heated liquid to ensure the cooling effect.

[0035] When demolding the workpiece, the upper mold 11 is separated from the lower mold 8. Then, the cylinder 501 is activated to push the movable plate 502 to move horizontally, causing the slide rod 504 to slide in the slide groove 503. With the guidance of the guide column 2, the ejector plate 3 can be moved upward, and at the same time, several ejector assemblies 4 can be moved upward to eject the workpiece. When the ejector assembly 4 ejects the workpiece, the top of the ejector rod 402 gradually applies a supporting force to the workpiece. The top of the ejector rod 402 is subjected to force, causing the piston 403 to move downward. The spring 404 is deformed by the force, and at the same time, the internal fluid of the hydraulic support rod 401 passes through the through hole 406, generating a damping force, which plays a buffering role and prevents the top of the ejector rod 402 from scratching the workpiece when ejecting it.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermoforming mold for PTFE liners of PTFE-lined valves, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a guide post (2), and the outer side of the guide post (2) is slidably connected to an ejector plate (3). The top of the ejector plate (3) is provided with several ejector assemblies (4), and one side of the ejector plate (3) is provided with a lifting assembly (5). Both sides of the top of the base (1) are fixedly connected to blocks (6). The top of the blocks (6) is fixedly connected to a lower mold base (7). The top of the lower mold base (7) is fixedly connected to a lower mold (8). The four corners of the top of the lower mold base (7) are fixedly connected to guide rods (9). The outer side of the guide rods (9) is sleeved with an upper mold base (10). The bottom end of the upper mold base (10) is fixedly connected to an upper mold (11). The outer sides of the lower mold (8) and the upper mold (11) are provided with cooling assemblies (12). The top of the upper mold base (10) is fixedly connected to a flow channel (13).

2. The PTFE liner hot pressing mold for PTFE-lined valves according to claim 1, characterized in that: The ejector assembly (4) includes a hydraulic support rod (401), an ejector rod (402), and a piston (403). The bottom end of the hydraulic support rod (401) is fixedly connected to the top end of the ejector plate (3). The outer side of the ejector rod (402) is slidably connected to the top end of the hydraulic support rod (401). The top end of the ejector rod (402) is located at the bottom of the lower mold (8). The top end of the piston (403) is fixedly connected to the bottom end of the ejector rod (402).

3. The PTFE liner hot pressing mold for PTFE-lined valves according to claim 2, characterized in that: The ejector assembly (4) also includes a spring (404), which is sleeved on the outside of the ejector rod (402). The top end of the spring (404) is fixedly connected to the inner wall of the hydraulic support rod (401), and the bottom end of the spring (404) is fixedly connected to the top end of the piston (403).

4. A PTFE liner hot pressing mold for PTFE-lined valves according to claim 3, characterized in that: The ejector assembly (4) further includes a buffer cavity (405), a through hole (406), and a ball (407). The buffer cavity (405) is opened inside the piston (403), the through hole (406) is opened on the upper and lower sides of the piston (403), and the ball (407) is disposed inside the buffer cavity (405).

5. A PTFE liner hot pressing mold for a PTFE-lined valve according to claim 4, characterized in that: The lifting assembly (5) includes a cylinder (501), a movable plate (502), a slide groove (503), and a slide rod (504). The outer side of the cylinder (501) is fixedly connected to the outer side of the block (6). One end of the movable plate (502) is fixedly connected to the output shaft of the cylinder (501). The slide groove (503) is opened inside the movable plate (502). One end of the slide rod (504) is fixedly connected to the outer side of the ejector plate (3). The outer side of the slide rod (504) is slidably connected to the inside of the slide groove (503).

6. A PTFE liner hot pressing mold for PTFE-lined valves according to claim 1, characterized in that: The cooling assembly (12) includes a water tank (1201), a cooling plate (1202), and a water pump (1203). The bottom end of the water tank (1201) is fixedly connected to the top end of the lower mold base (7). The outer side of the cooling plate (1202) is fixedly connected to the outer side of the water tank (1201). The bottom end of the water pump (1203) is fixedly connected to the top end of the water tank (1201). The input end of the water pump (1203) is located inside the water tank (1201).

7. A hot-pressing mold for a PTFE-lined valve according to claim 6, characterized in that: The cooling assembly (12) also includes a guide pipe (1204), a cooling pipe (1205), and a return pipe (1206). One end of the guide pipe (1204) is fixedly connected to the output end of the water pump (1203). The inlet end of the cooling pipe (1205) is fixedly connected to one end of the guide pipe (1204). The cooling pipe (1205) is arranged in an S-shape inside the lower mold (8). One end of the return pipe (1206) is fixedly connected to the outlet pipe of the cooling pipe (1205). The other end of the return pipe (1206) is fixedly connected to the top of the water tank (1201).

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